Transwestern Pipeline Company, LLC

Third Revised Volume No. 1

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Effective Date: 08/01/2007, Docket: RP06-614-003, Status: Effective

Second Revised Sheet No. 100 Second Revised Sheet No. 100 : Effective

Superseding: Original Sheet No. 100

 

GENERAL TERMS AND CONDITIONS

(continued)

 

 

2.2 Transporter may not refuse to accept receipt of gas with a Hydrocarbon Dew point equal

to or less than 15 degrees Fahrenheit provided that such gas satisfies all other

applicable provisions of Transporter's FERC Gas Tariff. This standard shall be

referred to as Transporter's Hydrocarbon Dew Point Safe Harbor.

 

A. Transporter may, from time to time, as operationally necessary, establish and post

on its Internet Website a limit on Hydrocarbon Dew point for receipts on specified

segments or other specified locations on its system to prevent hydrocarbon liquid

fallout, or to ensure that gas will be accepted for delivery into interconnects with

interstate pipelines, intrastate pipelines, end-users or directly connected local

distribution companies; provided, however, Transporter may not make a posting that

sets a Hydrocarbon Dew point limitation of less than 15 degrees Fahrenheit.

 

B. When Transporter determines there is an operational necessity to post a Hydrocarbon

Dew point on a specific line segment or location, Transporter shall post on its

Internet Website each blended Hydrocarbon Dew point Transporter calculates for a

line segment or location within 24 hours of such calculation, and the method by

which the Hydrocarbon Dew point value was calculated. Transporter will include in

such posting the anticipated duration of the limitation as well as an explanation of

the basis for the Hydrocarbon Dew point limitation.

 

C. Transporter will provide as much prior notice as reasonably practicable and will

attempt to provide such notice at least two (2) days prior to the effective date of

the limitation.

 

D. When Transporter posts a Hydrocarbon Dew point limit for a particular pipeline

segment or location, all gas receipts into the affected area from interconnects or

from any adjacent pipeline segments feeding gas directly into the affected pipeline

segment must meet the posted Hydrocarbon Dew point limit for the affected pipeline

segment.

 

E. Transporter shall post Hydrocarbon Dew point limitations for a given line segment or

location only 1) to the extent necessary to prevent liquid fallout from occurring,

2) in order to manage and operate Transporter's system in a safe and reliable

manner, and 3) as required to ensure that gas will be accepted for delivery at

interconnects with interstate pipelines, intrastate pipelines, end-users or directly

connected local distribution companies. Such posted Hydrocarbon Dew point

limitations shall remain in effect no longer than necessary.

 

F. Transporter shall perform Receipt Point Hydrocarbon Dew point calculations for this

Section 2.2 using the Peng-Robinson equation of state and C6+ assumptions consistent

with industry practices. Upon a Shipper's request, Transporter shall conduct a C9+

analysis; provided that in no event shall Transporter be required to conduct such

C9+ analysis at any one receipt point more frequently than once every twelve months.

Transporter shall post on its Internet Website the chromatograph data available at

not less than four (4) locations, including West of Thoreau, San Juan, Panhandle and

West Texas mainlines, to monitor the gas quality of the blended gas stream existing

in the mainline system. These gas quality monitoring locations shall be at points

where the aggregated gas stream encompasses all or most of the gas from the West of

Thoreau, San Juan, Panhandle and West Texas mainlines, respectively.